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and otherwise. as you know, law enforcement sources suggested at least two unexploded devices have been found. that's magic for investigators right now. notwithstanding forensic evidence, fingerprints, dna, hairs, fibers. they'll also see how the device was built. they'll be able to see what the components are. they'll be able to trace those components back. we're told that these are relatively unsophisticated low-order explosive devices. richard, that's something like if we think back to the olympic park bombing in 1996. >> right. >> those pipe bombs filled with black powder with shrapnel in or packed around them. that's the type of device. and realize in this case, where a bullet, let's say, for example, moves at about 1,000 feet a second. that low-order explosive, when it went off, it would still be pushing those bbs and ball bearings and other shrapnel at about. 000 foot a square second. so investigators are trying to gather all of that information up as well as looking at photographs, do interviews, surveillance cameras. they have a lot to do. but they have a lot to work with. >> so thos
but there are reports law enforcement officials have excessed interest in a man seen leaving the scene in dark clothing and there's word this morning a search warrant has been executed in a boston suburb. we go to boston now for the latest. chris, what can you tell us about the investigation? >> reporter: good morning. we're following several leads in regards to this investigation. first of all, the area around boston's copley plaza has been shut off. it's considered an active crime scene and police are busy combing that area for any clues they can find about yesterday's blast. you mentioned this search warrant. it was executed by local police starting around 5:00 yesterday evening. police spent more than seven hours at an apartment complex nearby. police were seen taking out what was believed to be evidence bags to a car. they were also seen questioning a couple of people in that apartment complex but did not appear police left with anybody in custody. we've also been told that police spent some time questioning a person who was injured in one of the blasts at a nearby hospital. we were told that they
, and made it virtually unknown just a week later. and the entirety of the law enforcement that worked this case should be commended for their efforts. >> reporter: court documents also contain new details about thursday night's carjacking. the fbi says surveillance pictures show dzhokhar and tamerlan tsarnaev at a gas station in cambridge where they drove with the owner of the suv they carjacked. one of them, investigators say, began the carjacking by pointing a gun at the driver and saying, "did you hear about the boston explosion? i did that." the carjacker showed the driver that he had bullets in his gun according to the fbi and said, "i'm serious." at the scene of the shootout in watertown where tamerlan tsarnaev was killed, other explosive devices were also found. in an interview for "dateline" nbc, the boston police commissioner says that's one reason he thinks the brothers planned other attacks. >> we had to step over some unexploded devices that they threw at the officers. and i can only understand from that that they had other targets. they were going other places. >> that wa
Search Results 0 to 3 of about 4 (some duplicates have been removed)